clients.py 文件源码

def connect(self, host, port):
        family, socktype, proto, _, sockaddr = socket.getaddrinfo(host, port, self.family, self.socktype)[0]
        s = socket.socket(family, socktype, proto)
        s.settimeout(self.timeout)
        s.connect(sockaddr)
        if self.nodelay:
            s.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
        if self.keepalive:
            s.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
            # Linux specific: after 1 idle minutes, start sending keepalives every 5 minutes.
            # Drop connection after 10 failed keepalives
        if hasattr(socket, "TCP_KEEPIDLE") and hasattr(socket, "TCP_KEEPINTVL") and hasattr(socket, "TCP_KEEPCNT"):
            s.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPIDLE, 1 * 60)
            s.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPINTVL, 5 * 60)
            s.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPCNT, 10)
        self.sock=s
        return s